Abstract
The local viscosity in aqueous solutions of polymers (dextran and hydroxyethl cellulose) and low-molecular weight viscogenic compounds (glycerol and d-glucose) has been studied by measuring the electrolytic conductivity of probe electrolytes. For low-molecular weight viscogenic compounds the local viscosities determined were close to the macroscopic viscosities of the solutions, whereas pronounced differences exist for polymer solutions. Of particular interest was the finding that the local viscosity for dextran was only marginally higher than the local viscosity for the corresponding monomer, d-glucose. The local viscosity for hydroxyethyl cellulose was somewhat higher than the local viscosity for dextran, indicating greater flexibility of the dextran chain.
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